TO SQUASH: Fixed issue.

Assets/Scripts/Game/Balls/BallBase.cs

@@ -54,6 +54,14 @@ public class BallBase : MonoBehaviour
             {
                 player.GetComponent<Player>().OnBarHit();
             }
+
+            // Notify other systems if needed.
+            var worldFiller = GameObject.FindGameObjectWithTag("WorldFiller");
+
+            if (worldFiller != null)
+            {
+                worldFiller.GetComponent<WorldFiller>().ClearWalls();
+            }
         }
     }
 

Assets/Scripts/Game/LevelEnder.cs

@@ -107,6 +107,12 @@ public class LevelEnder : MonoBehaviour
             {
                 addScoreTimer = 0.0f;
                 addScoreToPlayer = AddScore();
+
+                if (!addScoreToPlayer)
+                {
+                    tallyShown = false;
+                    StartCoroutine(ProceedToNextLevel());
+                }
             }
         }
     }
@@ -260,4 +266,47 @@ public class LevelEnder : MonoBehaviour
         yield return new WaitForSeconds(7.3f - 3.0f - (player.multiplier != 1.0f ? 0.75f : 0.0f));
         addScoreToPlayer = true;
     }
+
+    private IEnumerator ProceedToNextLevel()
+    {
+        musicManager.PauseMusic();
+
+        yield return new WaitForSeconds(1.0f);
+        
+        player.OnLevelEnd();
+
+        // Reenable spawners.
+        multiplierSpawner.StartSpawning();
+        sharkSpawner.StartSpawning();
+        cakeSpawner.StartSpawning();
+        ballSpawner.StartSpawning();
+
+        // Reset state.
+        levelEnded = false;
+        tallyShown = false;
+        addScoreToPlayer = false;
+        scoreTotal = 0;
+        addScoreTimer = 0.0f;
+
+        // Clear text labels.
+        timeBonus.text = "";
+        totalBonus.text = "";
+        isolationBonus.text = "";
+        overachieverBonus.text = "";
+        isolationCount.text = "";
+        overachieverPercent.text = "";
+        multiplierBonus.text = "";
+        overarchieverPercentLabel.enabled = false;
+        isolationCountSingleLabel.enabled = false;
+        isolationCountPluralLabel.enabled = false;
+
+        // Hide score tally.
+        levelEndTally.enabled = false;
+        levelEndTallyBackground.enabled = false;
+
+        // TODO: Reset balls.
+
+        // Restart music.
+        musicManager.ResumeMusic();
+    }
 }

Assets/Scripts/Game/MusicManager.cs

@@ -65,12 +65,22 @@ public class MusicManager : MonoBehaviour
     {
         if (needsReset)
         {
+            if (audioSource.isPlaying)
+            {
+                audioSource.Stop();
+            }
+
+            audioSource.clip = null;
             clipsQueue.Clear();
             ResetQueue();
             needsReset = false;
         }
 
-        audioSource.UnPause();
+        if (audioSource.clip != null && !audioSource.isPlaying) 
+        {
+            audioSource.UnPause();
+        }
+
         isPaused = false;
     }
 

Assets/Scripts/Game/Spawners/SharkSpawner.cs

@@ -6,6 +6,8 @@ public class SharkSpawner : Spawner
 
     public SpriteRenderer gameBoardSpriteRenderer;
 
+    public Player player;
+
     private Bounds gameBoardBounds;
 
     private float spawnTimer = 0f;
@@ -28,7 +30,7 @@ public class SharkSpawner : Spawner
     {
         spawnTimer += Time.fixedDeltaTime;
 
-        if (spawnTimer >= 1f && isActive && isSpawning)
+        if (spawnTimer >= 1f && isActive && isSpawning && player.level >= 10)
         {
             spawnTimer = 0f;
             if (Random.value < spawnProbability)
@@ -36,7 +38,7 @@ public class SharkSpawner : Spawner
                 GameObject shark = Instantiate(sharkPrefab, spawnPosition, Quaternion.identity);
                 Shark sharkScript = shark.GetComponent<Shark>();
                 sharkScript.gameBoardSpriteRenderer = gameBoardSpriteRenderer;
-                sharkScript.player = FindAnyObjectByType<Player>();
+                sharkScript.player = player;
                 isActive = false;
             }
         }